Is SATA disk better than SCSI disk? Which has better performance?
To answer your question about SATA vs. SCSI performance: From a performance perspective, enterprise-class UltraSCSI (SCSI) disk drives are faster in terms of latency, transfer rates and rotational speed (RPM) compared to ATA and SATA disk drives. 10,000 and 15,000 RPM SCSI disks are available for high performance applications, while most ATA and SATA disk drives are 5,400 or 7,200 RPM.
There are some 10,000 RPM SATA disk drives; however, you must look beyond RPM speed as a comparison metric. Look at average latency and transfer rates as additional criteria along with support for native command queue (NCQ) for SATA and command tag queue (CTQ) for SCSI. NCQ and CTQ enable the disk drive to process multiple and interleaved disk I/Os for better effective performance.
Related Q&A from Greg Schulz
Service provider outages should be a warning to customers that keeping data safe in the cloud is a shared responsibility.continue reading
When cloud durability is added to the mix, cloud providers are able to tout a high number of nines of availability.continue reading
Cloud storage can be less expensive from a cost-per-gigabyte perspective, but it's important not to lose sight of other benefits as a value ...continue reading
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.